Windows Phone Central forum user KoukiFC3S has managed to get a Lumia 920 running on the T-Mobile US network (reportedly making use of 1700MHz). Purchasing the developer unlocked device online, it was possible for a new account to be created with the carrier and the device to be used with some promising results.

Publishing a number of screenshots on our forums, KoukiFC3S was able achieve download speeds just shy of 9Mb/s. The Lumia 920 speed test supplied is shown on the left in the image below, while our own 3G speed test on the Three UK network is on the right (using a HTC 8X).

Should you be able to get your hands on an unlocked Lumia 920 and wish to make use of the handset on T-Mobile, there's hope at least. Be sure to join in the discussion on our forums by checking out the "I got a Lumia 920 on TMobile USA" thread.

Because 4G is speed to the consumer. Who cares about the way they get it. If it can download at the same speed or faster why not call it 4G. I laugh everytime I see that Verizon commercial with the graphs. They have nothing by T•Mobile. Yet in many areas Tmo is faster. Try the tmobile test drive and find out for yourself.

Oh wow really? I believed it lol, I was thinking of getting their pre-paid "4G" Service if I could get my hands on an Unlocked 920 but I'm on AT&T so it was just an idea once my contract finishes in order to save money...Ok now I'm confused...so it is 4G speeds? That would be great.

Its the speeds shown in the screenshot lol. If that's 4G to you, then yes it has 4G. Even LTE isn't up to the true 4G speeds yet (though I believe it has the potential). Tmobile is definitely holding their own.

Don't mistake T-Mobile's 4G for real 4G LTE. 4G is marketing, and if you've experienced 4G LTE, then T-Mobile's "4G" is blown out the window. T-Mobile's 4G only tops out at what Verizon or AT&T's 4G LTE can do at the minimum. You can regularly get speeds 3-5 times faster on 4G LTE.
Is T-Mobile 4G really 4G? From T-Mobile's marketing perspective, yes, it is. Its faster than plain old 3G, even though T-Mobile's 4G is technically a more advanced form of 3G. And at this point, with the other major network's on much faster and advanced technology, T-Mobile has to say they have 4G otherwise their network will just seem inferior (and it is) in comparison.

Who says 4G has to be LTE? To me 4G is speed not technology. If tmo's "speed" can beat Verizon's "LTE" then I would rather have HSPA+ it's all about the speed who cares about how you get it. T-Mobile will have a nationwide LTE footprint by the end of 2013 anyway and it will be "LTE Advanced" using the latest category equipment.

Wait a second..i thought the unlocked version does not support T-Mobile's 1700MHz frequency, but the recently given by MS to developers did support the pentaband. So..this might be the one of those developer edition ones..
Edit: Or may be he is using it in a place where the refarming has been done..

Cool, I had actually read somewhere (may here itself) that even the Lumia 900 is pentaband but Nokia locked the frequency because of ATT.
I was on T-Mobile prepaid using the awesome 2GB data on my Radar 4G till I bought the Lumia 900 unlocked, had to move to ATT prepaid just to use the slow 3G :(
I wish T-Mobile refarms its frequency soon in Columbus so I can move back to T- Mobile

The initial batch of L920s available from Rogers in Canada (also only available in black-if you can find one) definitely have the 1700 band, as well as being factory unlocked. There are users running them on WIND, Mobilicity, etc, which ONLY has access to AWS spectrum.

Can u tell me why am i incorrect? I m still standing on my point, that it wont work on the un-refarmed tmobile frequency (based on the specs on nokia's official site) unless the info on the site is wrong.

Ugh so confusing lol one guy saying it works, another saying it doesn't smh lol. The rogers phone, thats Canadian right? I'm here in Texas so I'm guessing maersk is right then ? If my deposit isn't bad on att I'll just get a contract lol

Yes, Rogers Wireless is a Canadian carrier.
Apparently, the first batch of the Nokia Lumia 920 that Rogers sell is carrier unlocked and works on T-Mobile's HSPA+.
Since AT&T hasn't started selling the Nokia Lumia 920, we have no idea if the one from AT&T will also work on T-Mobile HSPA+.

:) Lucky you, guys... Here in Croatia we must wait for a few more months, probably, before Lumia 920 gets here... Anyway, I see the screenshot option is being heavily used, that's good... :) Finally, eh?

Well, if you use WiFi 80% of the time then it shouldn't really matter which network you are on, unless it sucks big time 20% of the time. I think buying Lumia 920 off-contract and using it on StraightTalk or Net10 Wireless (AT&T type SIM) maybe a viable option if you were thinking of using it on T-Mobile to save money due to T-Mobile's cheaper data/talk/text plans.
I have been using unlocked Lumia 800 (Europen version) on Net10 (AT&T SIM) and I constantly get 2-7Mbps speed (avg 5Mbps) where I live. It is more than sufficient to run any video on my phone. I pay around $46 for unlimited talk/text/web, I can even do tethering and watch videos on my computer (done only for testing). My point is, this plan is way cheaper than any T-Mobile plans and you don't have to worry about T-Mobile bands. That's my 2 cents.

Well, as I said, I did tethering just for testing but they don't seem to care if I keep browsing all day long. I don't watch videos on my phone too much but I do use my phone a lot for web browsing. I have used more than 10GB in a month with no problems (I checked it after I got "COUNTER" app from Nokia, before I didn't know how much I used to use). I just didn't want to disclose it, lol.

This is not correct. As I stated above, both unlocked phones (Euro and American) will work on tmobile US, but only with 2g. Though it has the necessary LTE bands, it lacks the GSM bands required to use tmobile's 3g.

US At&t version lacks the 3g bands yes, although I would bet it is just disabled. European and Canadain versions have t-mobile's aws band though. Check the specs on the franch or candaian nokia site. see for yourself

Hi Rich or Jay or anyone that can help I'm having a problem posting from the app...Error msg is "error posting comment: bad authentication code. try logging in again. please try again." I've deleted the account info from settings content in the app.

I read this in the forums yesterday, which by the way is an awesome addition to the app. Good job fellas! I also read that it may work with Verizon's LTE 700 data band but not 1900 voice band. Not sure how true this but want nothing more than to have a 920 on my network. 822 is meh but not high end.

Yeah the 822 is ok but not all that the 920 is! I have the HTC 8x that was given out at the launch event its on att and is not bad but I really liked the 920's. I'm going to wait and see what the odyssey is going to be, before I use my upgrade on Verizon.

Duffau you are not understanding the T-Mobile refarm process. T-Mobile is refarming their 1900MHZ band to provide HSPA+ to unlocked ATT phones which do not have 1700/2100MHZ support. However, if a phone does support 1700/2100MHZ bands then it will automatically use that band on T-Mobile's network and get HSPA+. Since the L920 is pentaband and supports the 1700/2100MHZ bands then it will work on T-Mobile's network and get HSPA+ speeds. The refarm is only relevant to phones that do not have 1700/2100MHZ support.

While this in Brazil, i just have 15Mbps in a ADSL connection and stil need to pay around 50 dollars. HSDPA+ exist only in the metropolis and the average download speed in these are about 0,3MB/s. At least cost just 0,25 dollar cent/day

Great minds think alike... KoukiFC3S chooses the best phone in the world with an alternate OS (I want the 920, have a HD7), and he also chose the best car in the world with an alternate engine (I have a Zenki FC)... WP and RX7 owners unite!!! LOL

About the speeds - those are definitely nice speeds for mobile, h*ck I've only got 15mbps for cable internet at home.

WP Central
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the very first time I saw you'r website new look I was seriously impressed and the first word came out of my mouth was wow!! so I'm really saying it I really loved you'r new look and it is really just like WP that to is the reason of me liking it and the verge thing I said in my earlier comment is true you can see it for your self ther style is not even ok and I really like the effort you guys take to give us the news of WP no matter how small it is and not just the os but also the accessories info about the hand set
So thanx guys

LOL, here in Italy I have 5Mb/s in download, from my computer, using the ADSL.
So you're telling me that this phone on cellular network has twice the download speed I have with my desktop, and you even call it slow for your standards?
Loooooool :D
I wish my phone had even ¼ the speed of this 920 :P

I fail to see how this is impressive. I could get up to 32 Mb/s on 3g (h) here in Sweden, although the Lumia 800 only supports 14.4 Mb/s which I get most of the time. The speeds listed here I get when I have a crappy connection picking mushrooms in the woods.

The Developer Edition is going for $500-$700 on eBay, FWIW. Even more depending on the colour.

As for the AT&T phone, yes you can use it on T-Mobile. You won't get 3G/4G speeds unless you're in the new refarmed 1900 MHz areas. If not in those areas, it will use EDGE. But the phone will work. There are YouTube videos on how to unlock the device, FWIW.
As for Verizon, no clue. I'd imagine no. But hang tight, Verizon will be releasing an aluminum 920 variant called the 928 in April.